MIL-DTL-19595D
4.1.1 Responsibility for Testing. All initial acceptance testing, first article and production lot items, shall be
performed by an authorized test facility. The Naval Explosive Ordnance Disposal Technology Division,
Equipment Management Department, Indian Head, Maryland, is currently the only authorized test facility.
Naval EOD Technology Division is the certifying agent of additional Military test facilities authorized to
conduct re-certification and initial testing of limited locally procured items. The Government reserves the
right to perform any of the tests set forth in this specification where such tests are deemed necessary to
assure supplies and services conform to prescribed requirements.
4.1.2 First article inspections. The first article sample shall be subjected to the tests and inspections of 4.2.
The rejection of any sample unit shall be cause for rejection of the first article sample.
4.1.3 Quality conformance inspections. All production lot items sample shall be subjected to the tests and
inspections of 4.2. The rejection of any sample unit shall be cause for rejection of the production lot.
4.2 Test Procedures.
4.2.1 TEST PROCEDURE 1. Magnetic Effects Test. Each item shall be idealized as in 4.2.1.1 and then
measured for magnetic effect as in 4.2.1.2. The procedure of 4.2.1.1 and 4.2.1.2 shall be sequentially
followed for each of the three reference axes selected as in 4.2.1.5. The magnetic effect of the item is the
largest of the three measurements.
4.2.1.1 Magnetic Idealization. Idealization shall consist of placing each test item in a uniform magnetic
field of five gauss, with the item's reference axis aligned parallel to the field. A cycled, pulsed magnetic
field is superimposed parallel to the five gauss field. A six second cycle shall consist of the following: a
two second square positive pulse, one second off, a two second square negative pulse of equal amplitude,
and finally one second off. The amplitude of the positive pulse of the first cycle shall be between fifty and
sixty gauss. The amplitude of the positive pulse of the each successive cycle shall be reduced by no more
than one gauss per cycle. The cycling shall continue until the amplitude is reduced to zero. The purpose of
idealization is to attempt to temporarily magnetize the test item to provide a worst case condition.
4.2.1.2 Magnetic Effects Measurement. The HSM-2 Magnetometer detection sensor shall be aligned
parallel to the earth's magnetic field. Measurements are taken by introducing the test item to the sensor
along the earth's field to the specified test distance. While the test item is at the test distance, it is rotated
through all axes to identify the highest positive and negative readings. All planes of the test item are
introduced to the sensor at the specified test distance. The magnetic effect measurement is the sum of the
absolute values of the highest positive and negative readings.
4.2.1.3 Test Distances/Item Categorization.
4.2.1.3.1 Contact Component. The contact component test distance shall be 2.00 inches from the center of
the active element in the HSM-2 Magnetometer sensor to the surface of the item.
4.2.1.3.2 Contact Assembly. The contact assembly test distance shall be 4.50 inches from the center of the
active element in the HSM-2 Magnetometer sensor to the surface of the item.
4.2.1.3.3 Non-Contact Component. The non-contact component test distance shall be 5.00 inches from the
center of the active element in the HSM-2 Magnetometer sensor to the surface of the item.
4.2.1.3.4 Non-Contact Assembly. The non-contact assembly test distance shall be 12.00 inches from the
center of the active element in the HSM-2 Magnetometer sensor to the surface of the item.
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